INFO: task kworker/1:9:6947 blocked for more than 160 seconds.
      Not tainted 6.5.0-rc1-next-20230712-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:9     state:D stack:25584 pid:6947  ppid:2      flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5380 [inline]
 __schedule+0xecb/0x59d0 kernel/sched/core.c:6709
 schedule+0xe7/0x1b0 kernel/sched/core.c:6785
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x907/0x12d0 kernel/locking/mutex.c:747
 addrconf_dad_work+0xad/0x13c0 net/ipv6/addrconf.c:4087
 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
 worker_thread+0x687/0x1110 kernel/workqueue.c:2751
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>